In the lesson setup for the stroking exercise ( in the PDF ), Nolan suggests that vertical strokes are easier than horizontal strokes and that we should orient the drawing when possible to draw vertically. My horizontal strokes are much more straight and consistent than my vertical ones.

I would highly recommend that you practice both, the more you do it the better you will become and how easier it would be. Stroke angles will become important when you shade various plane angles as in the rock drawing that will be coming up in your lessons.

At the end of the day, it doesn't matter which you use as long as you have the result you are trying to achieve. So go with whatever works best for you. That said, I agree practice them all anyway. You never know when you might need to pull a little something extra out of your bag of tricks!

Welcome aboard Gary.

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Cheers, Val

”Creativity is allowing yourselves to make mistakes. Work on knowing which ones to keep!”